Well Log Classification Overview

Well Log Classification and Cataloging

Industry Data

Company Data

Well Log Catalog

Well Log Data Repository PWLS Class Repository

Activities Enabled by PWLS Meta Data

• Classify well logs

• Classify well log channels

• Query for well logs

• Query for well log channels

Classify a Well Log / Channel / Parameter

• well log well_log_service_class– by interpretation of well log header

• channel company_channel_class– validate against dictionary

• parameter company parameter spec.– validate against dictionary

Genericity of classification

• original acquired data primarily co. data– company channel class– well log service class

• computed data primarily industry data– well log curve class– well log tool class

• processed data combined approach

Query by technology

• goal: logs of a given technology

• industry classification:well log tool class

• company classification: well log service class

• catalog: classification by well log service class

• result: well log data

Query by channel attributes

• goal: channels of a given object, property, function, ...

• industry classification:well log curve class• company classification: company channel

class class• catalog: classification by company channel

class• result: well log data

Query by propery type

• goal: channels of a given property type

• industry classification: well log curve class

• company classification: company channel class class

• catalog: classification by company channel class

• result: well log data

Parameter-Augmented Query

• goal: well logs, subject to parameteric constraints e. g. total_depth > 33000 ft

• industry classification: param spec (property type) e. g. Bottom_Depth

• company classification: company parm spec e. g. BOTTOM_DEPTH

• catalog: parametric classification e. g. BOTTOM_DEPTH=44000(m)

• result: well log data

Existing Data

Well Log Catalog

Well Log Data Repository

15:MDL : xxxxxxxxx150:CDL : xxxxxxxxx280:SLD : xxxxxxxxx440:LDS : xxxxxxxxx

Dictionaryqueryengine

Queries

Well Log Catalog

Well Log Data Repository

15:MDL : xxxxxxxxx150:CDL : xxxxxxxxx280:SLD : xxxxxxxxx440:LDS : xxxxxxxxx

DictionaryWhere are my density logs?

Existing Data

Well Log Catalog

Well Log Data Repository

15:MDL : xxxxxxxxx150:CDL : xxxxxxxxx280:SLD : xxxxxxxxx440:LDS : xxxxxxxxx

Dictionaryqueryengine

Industry Data

PWLS

Company Data

15:MDL : xxxxxxxxx : Density150:CDL : xxxxxxxxx : Density280:SLD : xxxxxxxxx : Density440:LDS : xxxxxxxxx : Density

Density : xxxxxxxxxAcoustic : xxxxxxxxxNeutron : xxxxxxxxx

... density ...